 | Wallace Stegner - 1954 - 506 sivua
John Wesley Powell's contributions to the opening of the West, and to the scientific study of the nation. | |
 | Wallace Stegner - 1954 - 488 sivua
John Wesley Powell's contributions to the opening of the West, and to the scientific study of the nation. | |
 | Wallace Stegner - 1954 - 510 sivua
John Wesley Powell's contributions to the opening of the West, and to the scientific study of the nation. | |
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